4
A wagon has 4 wheels.
A bike with 4 wheels has 4 wheels.
A tram can be a monorail without wheels.
2 wheels
4 Wheels
2 wheels
Concorde has 10 landing wheels - how many internal "wheels" is any ones guess
Becaks have Three wheels
a bus has 8 wheels
It has 22 wheels
the coach has 4 wheels
9 wheels